Boiler.



No. 698,|40. -l Faten'ted Apr. 22, |902.

'J. A. & J. M. B. REY. Y

BOILER.

(Application led Nov. 6, 1901 2 Sheats-Sheet l..

(No Model.)

' 2 Sheets-Sheet 2.

o o o @MET PatentedApr. 22, |902. .1. A. & .1. M. B. REY.

B 0 l L E R.

(Appuczion' med mv. e, 1901.)

No. 69.8,I4-0.

(No Model.;

A @yi/Q @by to be heated by a hydrocarbon burner and the tubes forming the worm or worms adaptl pands intovsteam or vapor is conducted NrrED STATES ATENT FFICE.

JEAN ALEXANDRE AND JEAN MARC BARTHELEMY REY, OF PARIS,

FRANCE.

BOILER.

SQEEGIFLCATEON formingpart of Letters atent No. 698,140, dated April. 22, 1902.

Application iiled November 6, 1901. Serial No. 81,314; (No modell) i .To all whom it may concern: y

Be it known that we, JEAN ALEXANDRE REY and JEAN MARC BARTHELEMY REY, citi- Zens of the Republic of France, residing at Paris, France, have jointly invented certain new and useful Improvements in Steam-Generators, of which the following is a specifica-l tion.

Our invention has relation to a steam-generator of the worm type, especially adapted ed to be in contact with the Haine and gases of the burner, and in such connection it re-` lates to the construction and arrangement of such a generator or boiler.

-The principal object ofour invention is to provide a boiler or generator formed of a series of worms all joined together by separable connections and arranged so that the heating of the worms shall take place progressively and regularly, the path of the hot gases from the source of heat being ina direction the reverse of the flow of the water and steam in the worms.

The principal advantage of our present invention resides in the fact that theworms may be readily built up or taken away to increase or decrease the number of sections, and hence to increase or decrease the capacity of the boiler, which in marine work isdecidedly advantageous. l Again, by arranging the worms in separable sections the pipes of the several worms may beot varying diameters and joined by' detachable couplings with adjacent worms,the pipes of which may belarger or smaller in diameter than the pipes of the Worm to Which it is connected. By this means the liquid mayurst travel through a worm or worms having pipes of relatively small diameter and `then through successive worms, the pipes of which are of relatively large diameter, so that the liquid as it exthrough gradually larger pipes to prevent 0bstruction to the iiow of steam or liquid.

The nature and scope of our invention will be more fully understood from the following description, taken in connection with the accompanying drawings, forming part hereof,

in Which- `valve on the liquid-inlet pipe.

Referring to Fig. 1 of the drawings, A represents the casing ofthe boiler, the cylindrical walls of the casing A having an inner lining A' ofrefractory material. The bottom A2 of the casing is closed save for acentral opening AS, and the top A4 of the casing is also'closed except for a central opening `upon which is iitted the stack or take-0E pipe A5, through which products of combustion are led ott. The water-inlet pipe ais con# trollcd by a non-return valve b and leads to the uppermost worm d in the series of worms d, @,f, g, and h, constituting the generator or boiler. This worm d is arranged in a flat portion at the root' of the casing and in a tubular downwardly projecting portion d',

registering with the stackA5 in the roof of the casing A. The tubular portion d is connected by a detachable coupling e' with the worm e, which, as shown, is also tubular like the worm portion d' and concentric there with, so as to inclose the tubular portion d' of the worm d and extends upward toward the roof A4 of the casing A. This Worm e is connected at its upper end by a detachable coupling f to the worm f, arranged in the form of a tube, adjacent to the insulation A' of the casing. This worm f communicates at its base with the worrn g by a U-shaped coni nection f2. The Worm gis in the shape of a hat, the brim of which rests upon the door A2 of the casing A and the crown g' of which extends upward from and registers withthe opening A8 in said floor A2. The top`of the crown g ot the worm g is open and communicates, by a detachable coupling g2, with an inverted-cup-shaped worm h, the tubular portion ot which is concentric with and surrounds the lcrown g' of the worm g and the iat portion h of which worm 7l extends above IOO and across the open top of the crown g. 'lhe iiat portion 7L' communicates by the pipe i with the point to which the steam is to be delivered. The fiat portion 7L' supports a plate 7L?, which is traversed bythe pipe i', but otherwise seals the ilat portion 7L of the worm 7i. to prevent the passage of hot gases directly through said portion 7i'. The pipe 1' traverses the interior ot' the worm d' and also penetrates the smoke-stack A5, as clearly shown. The worms constituting the generator are heated, preferably, by a hydrocarbon-burner, one form ot' which is illustrated in the drawings. Theburnerconsistsofapipe7t,leading oil to the vaporzing-coil 7.3', which in turn discharges th rough the nozzle or pnl verizer 7a2 in to the mixingehamber m. Air is drawn into the chamber 'm through the openings 7.:3 by the passage of the vaporized oil into said chanr ber m from the nozzle 7a2. The mixing-chamberm is U -shaped and terminates in a burner m', which projects upward into the coil 7s. The coil 7;. is situated below the floor A2 of the casing A, but in alinement with the apertu re or opening A3 in said lioor. Theflame from the burner m' not only heats the vaporizing-coil 7c', but passes upward through the opening A3 and heats the interior ofthe crown g of the worm f/ and the base 7L' ofthe worm 7L. The gases are deflected downward by the base 7L to heat the exteriorof the crown g', the interior of the worm 7L, and the fiat or base portion of the worm g. The gases' then pass upward between the exterior of the worms 7L and e and the interior of the worm fand into the interior ot' the worm e, passing over the under face of the worm (Z- and the exterior of the tubular portion d. The gases are then deflected upward by the flat portion 7L of the worm 7?, and the plate h2 and ilow through the tubular portion c7 of the worin (l into the smoke-stack A5. The passage of the gases is indicated by arrows in the various views.

It will be seen from the above description that in Fig. l the generator consists of a series of worms located above a central point and a second series of worms located below the central point, the two series being oppositely arranged-that is to say, the worm d, with its tubular extension c7', corresponds to the worm g, with its tubular extension g', and the worms e and 7L correspond, but project in different directions from the common base, which is the flat worm 7L. The two series of worms thus described are inclosed in the tu* bular worm f, which is formed on the wall of the casing, and all the worms in the two series are so arranged that the hot gases are obliged to lick the interior and exterior of the worms in each series and to lick the interior of the surrounding worm fbefore the gases enter the ofltake or smoke-stack A5.

In the modification illustrated in Fig. 2 the principle above set forth is also embodied; but in this form ol' the generator below the central flat worm p extends four concentrically-arranged tubular worms g', 7L, q, and fw, respectively. Two of these tubular worms 7L and q have flat portions 71. and q', parallel with the central flat worm p, and the worm g' has a ilat base g, resting on the base A2 0f the casing A. Above the central flat worm ex tends similarly four concentrically-arranged tubular worms c7', c, r, and f, and parallel with the roof A4 of the casing is arranged the flat worm d, as in the form illustrated in Fis. l. In the form illustrated in Fig. 2 the two outer tubular worms flo and f1L are separated by a tine-space from the refractory wall A of the casing. connected together in this form by detachable couplings c', r, and f and by detachable couplings g2, f2, q2, and p2, as clearly illustrated in the drawings. The path of the hot gases in this form of apparatus is illustrated by arrows.

In Fig. 3 a further modified form of gener# ator is illustrated,but the principle remains unchanged. In this form there are iive cor1- centrically-arranged tubular worms above and below a central lat worm p. Thus above the iiat worm p are the tubular worms (7', c, 7', S, and f, while below the dat worm are the tubular worms QQ 7L, (1,7, andf. In this foi-1n the worm f corresponds to the worm fof Fig. l, inasmuch as it is continuous from top to bottom of the casing A and rest-s against the refractory wall A of said casing.

ln the forms illustrated in Figs. 2 and 3 two plates 71.2 and 7bit) are used to assist in preventing the passage ot' the gases directly up the smoke-stack ln Fig. 4 an arrangement of worms is shown which is aduplicate ofthe arrangement shown in Fig. l. In this form, however, the refractory wall A is dispensed with and the casing made double-walled. The space w between the walls of the casing A is utilized to receive fresh air and to heat the same prior to its delivery tothe mixingchamber m of the burner. In Fig. 5 a preferred form of non-return valve 7J on the Water-inlet pipe ct is illustrated. This valve b is an ordinary ball-check valve, which permits water to pass through it in one direction, but prevents steam or vapor passing through it in an opposite direction.

As shown in all the forms illustrated in Figs. l to 4, the upper worms, which contain the water partly warmed, but not yet vaporized, are formed of pipes the diameter of which is less than the diameter of the pipes forming the lower worms, which are closest to the burner m. The lower worms contain the vapor or steam, and their pipes are :made larger in diameter to permit of the necessary expansion of the liquid after it becomes vapor or steam.

l-laving thus described the nature and object of our invention, what We claim as new, and desire to secure by Letters Patent, is-

l. A steam generator or boiler, comprising a casing, a number of worms through which tho liquid travels continuously, said worms The various worm-sections are' ICO IIO

arranged in a double series of tubular worms located above and below a central flat worm the series above the central flat worin being concentrcally arranged with respect to each other and the casing and the lower series being conceutrically arranged with respect to Y each other and the casing and the double secentral iiat worm, in combination with a. source of heat located below the lowermost worms.

2. A steam generator or boiler, comprising a casing, a flat worm located below the roof of the casing, a iat worm located above the base of the casing, a central flat worm located intermediately ofthe roof of the casing, a series of concentrically-arranged tubular worms located between the central flat worm and the roof of the casing, a similar series of tubular worms located below the central fiat worm, all of said worms being detachably connected together to form a continuous passage for the water and steam, and all the worms arranged to forma continuous flue for the passage of hot gases entering the base of the casing, said flue conducting the gases to the interior and exterior surfaces of all the tubular worms and to the exposed surfaces of all the at worms,in combination with a source of heat located directly below the lowermost tubular worm and an offtake located directly above the uppermost tubular worm.

3. A steam generator or boiler, comprising a casing, `a flat worm located centrally within the casing, a series of tubular worms arranged concentrically with the wall of the casing and with each other located above the central flat worm, a second series of similarly-arranged tubular worms located below the central flat worm and having their pipes larger in diameter than the pipes of the'upper series, a water-inlet pipe discharging into.

the upper series of tubular worms, avsteam- .outlet pipe leading from the lower series of tubular worms and traversing the central iat worm, and the innermost tubular worm ot'v the upper series, detachable couplings con` necting all the worms'togetherto form a continuous passage for the water and. steam through the worms, in combination with a source of heat located below the lower seriesof tubular worms and an offtake located above the upper series of worms, the worms being arranged to form a continuous passage for the gases from the burner around all the worms and into the oltake. t i

4:. A steam generator or boiler, comprisingl a casing, a double series of tubular andconcentric worms arranged within the casing, al central flat worm above which one series of tubular worms isarranged and below which the other series of worms is located, the pipes of the worms above the central Ilat worm being of smaller diameter than the other worms, a source of heat located below Vthe lower worms and a water-inlet pipe leading to the upper worms, said worms arranged so that the heat first traverses the space between the lower tubular worms and under the flat worm and then traverses the space between the upper tubular Worms and over the flat worm, and a series ofcouplings connecting the 'various worms together to form a continuous passage-for the water and steam through the worms. l

In testimony whereof we have signed this specilication in the presence of two subscribing witnesses.

JEAN ALEXANDRE REY. JEAN MARC BARTHELEMY REY. 

